1//===--- IdentifierTable.cpp - Hash table for identifier lookup -----------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file implements the IdentifierInfo, IdentifierVisitor, and 11// IdentifierTable interfaces. 12// 13//===----------------------------------------------------------------------===// 14 15#include "clang/Basic/CharInfo.h" 16#include "clang/Basic/IdentifierTable.h" 17#include "clang/Basic/LangOptions.h" 18#include "clang/Basic/OperatorKinds.h" 19#include "llvm/ADT/DenseMap.h" 20#include "llvm/ADT/FoldingSet.h" 21#include "llvm/ADT/SmallString.h" 22#include "llvm/Support/ErrorHandling.h" 23#include "llvm/Support/raw_ostream.h" 24#include <cstdio> 25 26using namespace clang; 27 28//===----------------------------------------------------------------------===// 29// IdentifierInfo Implementation 30//===----------------------------------------------------------------------===// 31 32IdentifierInfo::IdentifierInfo() { 33 TokenID = tok::identifier; 34 ObjCOrBuiltinID = 0; 35 HasMacro = false; 36 HadMacro = false; 37 IsExtension = false; 38 IsCXX11CompatKeyword = false; 39 IsPoisoned = false; 40 IsCPPOperatorKeyword = false; 41 NeedsHandleIdentifier = false; 42 IsFromAST = false; 43 ChangedAfterLoad = false; 44 RevertedTokenID = false; 45 OutOfDate = false; 46 IsModulesImport = false; 47 FETokenInfo = nullptr; 48 Entry = nullptr; 49} 50 51//===----------------------------------------------------------------------===// 52// IdentifierTable Implementation 53//===----------------------------------------------------------------------===// 54 55IdentifierIterator::~IdentifierIterator() { } 56 57IdentifierInfoLookup::~IdentifierInfoLookup() {} 58 59namespace { 60 /// \brief A simple identifier lookup iterator that represents an 61 /// empty sequence of identifiers. 62 class EmptyLookupIterator : public IdentifierIterator 63 { 64 public: 65 StringRef Next() override { return StringRef(); } 66 }; 67} 68 69IdentifierIterator *IdentifierInfoLookup::getIdentifiers() { 70 return new EmptyLookupIterator(); 71} 72 73ExternalIdentifierLookup::~ExternalIdentifierLookup() {} 74 75IdentifierTable::IdentifierTable(const LangOptions &LangOpts, 76 IdentifierInfoLookup* externalLookup) 77 : HashTable(8192), // Start with space for 8K identifiers. 78 ExternalLookup(externalLookup) { 79 80 // Populate the identifier table with info about keywords for the current 81 // language. 82 AddKeywords(LangOpts); 83 84 85 // Add the '_experimental_modules_import' contextual keyword. 86 get("import").setModulesImport(true); 87} 88 89//===----------------------------------------------------------------------===// 90// Language Keyword Implementation 91//===----------------------------------------------------------------------===// 92 93// Constants for TokenKinds.def 94namespace { 95 enum { 96 KEYC99 = 0x1, 97 KEYCXX = 0x2, 98 KEYCXX11 = 0x4, 99 KEYGNU = 0x8, 100 KEYMS = 0x10, 101 BOOLSUPPORT = 0x20, 102 KEYALTIVEC = 0x40, 103 KEYNOCXX = 0x80, 104 KEYBORLAND = 0x100, 105 KEYOPENCL = 0x200, 106 KEYC11 = 0x400, 107 KEYARC = 0x800, 108 KEYNOMS18 = 0x01000, 109 KEYNOOPENCL = 0x02000, 110 WCHARSUPPORT = 0x04000, 111 HALFSUPPORT = 0x08000, 112 KEYALL = (0xffff & ~KEYNOMS18 & 113 ~KEYNOOPENCL) // KEYNOMS18 and KEYNOOPENCL are used to exclude. 114 }; 115 116 /// \brief How a keyword is treated in the selected standard. 117 enum KeywordStatus { 118 KS_Disabled, // Disabled 119 KS_Extension, // Is an extension 120 KS_Enabled, // Enabled 121 KS_Future // Is a keyword in future standard 122 }; 123} 124 125/// \brief Translates flags as specified in TokenKinds.def into keyword status 126/// in the given language standard. 127static KeywordStatus getKeywordStatus(const LangOptions &LangOpts, 128 unsigned Flags) { 129 if (Flags == KEYALL) return KS_Enabled; 130 if (LangOpts.CPlusPlus && (Flags & KEYCXX)) return KS_Enabled; 131 if (LangOpts.CPlusPlus11 && (Flags & KEYCXX11)) return KS_Enabled; 132 if (LangOpts.C99 && (Flags & KEYC99)) return KS_Enabled; 133 if (LangOpts.GNUKeywords && (Flags & KEYGNU)) return KS_Extension; 134 if (LangOpts.MicrosoftExt && (Flags & KEYMS)) return KS_Extension; 135 if (LangOpts.Borland && (Flags & KEYBORLAND)) return KS_Extension; 136 if (LangOpts.Bool && (Flags & BOOLSUPPORT)) return KS_Enabled; 137 if (LangOpts.Half && (Flags & HALFSUPPORT)) return KS_Enabled; 138 if (LangOpts.WChar && (Flags & WCHARSUPPORT)) return KS_Enabled; 139 if (LangOpts.AltiVec && (Flags & KEYALTIVEC)) return KS_Enabled; 140 if (LangOpts.OpenCL && (Flags & KEYOPENCL)) return KS_Enabled; 141 if (!LangOpts.CPlusPlus && (Flags & KEYNOCXX)) return KS_Enabled; 142 if (LangOpts.C11 && (Flags & KEYC11)) return KS_Enabled; 143 // We treat bridge casts as objective-C keywords so we can warn on them 144 // in non-arc mode. 145 if (LangOpts.ObjC2 && (Flags & KEYARC)) return KS_Enabled; 146 if (LangOpts.CPlusPlus && (Flags & KEYCXX11)) return KS_Future; 147 return KS_Disabled; 148} 149 150/// AddKeyword - This method is used to associate a token ID with specific 151/// identifiers because they are language keywords. This causes the lexer to 152/// automatically map matching identifiers to specialized token codes. 153static void AddKeyword(StringRef Keyword, 154 tok::TokenKind TokenCode, unsigned Flags, 155 const LangOptions &LangOpts, IdentifierTable &Table) { 156 KeywordStatus AddResult = getKeywordStatus(LangOpts, Flags); 157 158 // Don't add this keyword under MSVCCompat. 159 if (LangOpts.MSVCCompat && (Flags & KEYNOMS18) && 160 !LangOpts.isCompatibleWithMSVC(19)) 161 return; 162 163 // Don't add this keyword under OpenCL. 164 if (LangOpts.OpenCL && (Flags & KEYNOOPENCL)) 165 return; 166 167 // Don't add this keyword if disabled in this language. 168 if (AddResult == KS_Disabled) return; 169 170 IdentifierInfo &Info = 171 Table.get(Keyword, AddResult == KS_Future ? tok::identifier : TokenCode); 172 Info.setIsExtensionToken(AddResult == KS_Extension); 173 Info.setIsCXX11CompatKeyword(AddResult == KS_Future); 174} 175 176/// AddCXXOperatorKeyword - Register a C++ operator keyword alternative 177/// representations. 178static void AddCXXOperatorKeyword(StringRef Keyword, 179 tok::TokenKind TokenCode, 180 IdentifierTable &Table) { 181 IdentifierInfo &Info = Table.get(Keyword, TokenCode); 182 Info.setIsCPlusPlusOperatorKeyword(); 183} 184 185/// AddObjCKeyword - Register an Objective-C \@keyword like "class" "selector" 186/// or "property". 187static void AddObjCKeyword(StringRef Name, 188 tok::ObjCKeywordKind ObjCID, 189 IdentifierTable &Table) { 190 Table.get(Name).setObjCKeywordID(ObjCID); 191} 192 193/// AddKeywords - Add all keywords to the symbol table. 194/// 195void IdentifierTable::AddKeywords(const LangOptions &LangOpts) { 196 // Add keywords and tokens for the current language. 197#define KEYWORD(NAME, FLAGS) \ 198 AddKeyword(StringRef(#NAME), tok::kw_ ## NAME, \ 199 FLAGS, LangOpts, *this); 200#define ALIAS(NAME, TOK, FLAGS) \ 201 AddKeyword(StringRef(NAME), tok::kw_ ## TOK, \ 202 FLAGS, LangOpts, *this); 203#define CXX_KEYWORD_OPERATOR(NAME, ALIAS) \ 204 if (LangOpts.CXXOperatorNames) \ 205 AddCXXOperatorKeyword(StringRef(#NAME), tok::ALIAS, *this); 206#define OBJC1_AT_KEYWORD(NAME) \ 207 if (LangOpts.ObjC1) \ 208 AddObjCKeyword(StringRef(#NAME), tok::objc_##NAME, *this); 209#define OBJC2_AT_KEYWORD(NAME) \ 210 if (LangOpts.ObjC2) \ 211 AddObjCKeyword(StringRef(#NAME), tok::objc_##NAME, *this); 212#define TESTING_KEYWORD(NAME, FLAGS) 213#include "clang/Basic/TokenKinds.def" 214 215 if (LangOpts.ParseUnknownAnytype) 216 AddKeyword("__unknown_anytype", tok::kw___unknown_anytype, KEYALL, 217 LangOpts, *this); 218} 219 220/// \brief Checks if the specified token kind represents a keyword in the 221/// specified language. 222/// \returns Status of the keyword in the language. 223static KeywordStatus getTokenKwStatus(const LangOptions &LangOpts, 224 tok::TokenKind K) { 225 switch (K) { 226#define KEYWORD(NAME, FLAGS) \ 227 case tok::kw_##NAME: return getKeywordStatus(LangOpts, FLAGS); 228#include "clang/Basic/TokenKinds.def" 229 default: return KS_Disabled; 230 } 231} 232 233/// \brief Returns true if the identifier represents a keyword in the 234/// specified language. 235bool IdentifierInfo::isKeyword(const LangOptions &LangOpts) { 236 switch (getTokenKwStatus(LangOpts, getTokenID())) { 237 case KS_Enabled: 238 case KS_Extension: 239 return true; 240 default: 241 return false; 242 } 243} 244 245tok::PPKeywordKind IdentifierInfo::getPPKeywordID() const { 246 // We use a perfect hash function here involving the length of the keyword, 247 // the first and third character. For preprocessor ID's there are no 248 // collisions (if there were, the switch below would complain about duplicate 249 // case values). Note that this depends on 'if' being null terminated. 250 251#define HASH(LEN, FIRST, THIRD) \ 252 (LEN << 5) + (((FIRST-'a') + (THIRD-'a')) & 31) 253#define CASE(LEN, FIRST, THIRD, NAME) \ 254 case HASH(LEN, FIRST, THIRD): \ 255 return memcmp(Name, #NAME, LEN) ? tok::pp_not_keyword : tok::pp_ ## NAME 256 257 unsigned Len = getLength(); 258 if (Len < 2) return tok::pp_not_keyword; 259 const char *Name = getNameStart(); 260 switch (HASH(Len, Name[0], Name[2])) { 261 default: return tok::pp_not_keyword; 262 CASE( 2, 'i', '\0', if); 263 CASE( 4, 'e', 'i', elif); 264 CASE( 4, 'e', 's', else); 265 CASE( 4, 'l', 'n', line); 266 CASE( 4, 's', 'c', sccs); 267 CASE( 5, 'e', 'd', endif); 268 CASE( 5, 'e', 'r', error); 269 CASE( 5, 'i', 'e', ident); 270 CASE( 5, 'i', 'd', ifdef); 271 CASE( 5, 'u', 'd', undef); 272 273 CASE( 6, 'a', 's', assert); 274 CASE( 6, 'd', 'f', define); 275 CASE( 6, 'i', 'n', ifndef); 276 CASE( 6, 'i', 'p', import); 277 CASE( 6, 'p', 'a', pragma); 278 279 CASE( 7, 'd', 'f', defined); 280 CASE( 7, 'i', 'c', include); 281 CASE( 7, 'w', 'r', warning); 282 283 CASE( 8, 'u', 'a', unassert); 284 CASE(12, 'i', 'c', include_next); 285 286 CASE(14, '_', 'p', __public_macro); 287 288 CASE(15, '_', 'p', __private_macro); 289 290 CASE(16, '_', 'i', __include_macros); 291#undef CASE 292#undef HASH 293 } 294} 295 296//===----------------------------------------------------------------------===// 297// Stats Implementation 298//===----------------------------------------------------------------------===// 299 300/// PrintStats - Print statistics about how well the identifier table is doing 301/// at hashing identifiers. 302void IdentifierTable::PrintStats() const { 303 unsigned NumBuckets = HashTable.getNumBuckets(); 304 unsigned NumIdentifiers = HashTable.getNumItems(); 305 unsigned NumEmptyBuckets = NumBuckets-NumIdentifiers; 306 unsigned AverageIdentifierSize = 0; 307 unsigned MaxIdentifierLength = 0; 308 309 // TODO: Figure out maximum times an identifier had to probe for -stats. 310 for (llvm::StringMap<IdentifierInfo*, llvm::BumpPtrAllocator>::const_iterator 311 I = HashTable.begin(), E = HashTable.end(); I != E; ++I) { 312 unsigned IdLen = I->getKeyLength(); 313 AverageIdentifierSize += IdLen; 314 if (MaxIdentifierLength < IdLen) 315 MaxIdentifierLength = IdLen; 316 } 317 318 fprintf(stderr, "\n*** Identifier Table Stats:\n"); 319 fprintf(stderr, "# Identifiers: %d\n", NumIdentifiers); 320 fprintf(stderr, "# Empty Buckets: %d\n", NumEmptyBuckets); 321 fprintf(stderr, "Hash density (#identifiers per bucket): %f\n", 322 NumIdentifiers/(double)NumBuckets); 323 fprintf(stderr, "Ave identifier length: %f\n", 324 (AverageIdentifierSize/(double)NumIdentifiers)); 325 fprintf(stderr, "Max identifier length: %d\n", MaxIdentifierLength); 326 327 // Compute statistics about the memory allocated for identifiers. 328 HashTable.getAllocator().PrintStats(); 329} 330 331//===----------------------------------------------------------------------===// 332// SelectorTable Implementation 333//===----------------------------------------------------------------------===// 334 335unsigned llvm::DenseMapInfo<clang::Selector>::getHashValue(clang::Selector S) { 336 return DenseMapInfo<void*>::getHashValue(S.getAsOpaquePtr()); 337} 338 339namespace clang { 340/// MultiKeywordSelector - One of these variable length records is kept for each 341/// selector containing more than one keyword. We use a folding set 342/// to unique aggregate names (keyword selectors in ObjC parlance). Access to 343/// this class is provided strictly through Selector. 344class MultiKeywordSelector 345 : public DeclarationNameExtra, public llvm::FoldingSetNode { 346 MultiKeywordSelector(unsigned nKeys) { 347 ExtraKindOrNumArgs = NUM_EXTRA_KINDS + nKeys; 348 } 349public: 350 // Constructor for keyword selectors. 351 MultiKeywordSelector(unsigned nKeys, IdentifierInfo **IIV) { 352 assert((nKeys > 1) && "not a multi-keyword selector"); 353 ExtraKindOrNumArgs = NUM_EXTRA_KINDS + nKeys; 354 355 // Fill in the trailing keyword array. 356 IdentifierInfo **KeyInfo = reinterpret_cast<IdentifierInfo **>(this+1); 357 for (unsigned i = 0; i != nKeys; ++i) 358 KeyInfo[i] = IIV[i]; 359 } 360 361 // getName - Derive the full selector name and return it. 362 std::string getName() const; 363 364 unsigned getNumArgs() const { return ExtraKindOrNumArgs - NUM_EXTRA_KINDS; } 365 366 typedef IdentifierInfo *const *keyword_iterator; 367 keyword_iterator keyword_begin() const { 368 return reinterpret_cast<keyword_iterator>(this+1); 369 } 370 keyword_iterator keyword_end() const { 371 return keyword_begin()+getNumArgs(); 372 } 373 IdentifierInfo *getIdentifierInfoForSlot(unsigned i) const { 374 assert(i < getNumArgs() && "getIdentifierInfoForSlot(): illegal index"); 375 return keyword_begin()[i]; 376 } 377 static void Profile(llvm::FoldingSetNodeID &ID, 378 keyword_iterator ArgTys, unsigned NumArgs) { 379 ID.AddInteger(NumArgs); 380 for (unsigned i = 0; i != NumArgs; ++i) 381 ID.AddPointer(ArgTys[i]); 382 } 383 void Profile(llvm::FoldingSetNodeID &ID) { 384 Profile(ID, keyword_begin(), getNumArgs()); 385 } 386}; 387} // end namespace clang. 388 389unsigned Selector::getNumArgs() const { 390 unsigned IIF = getIdentifierInfoFlag(); 391 if (IIF <= ZeroArg) 392 return 0; 393 if (IIF == OneArg) 394 return 1; 395 // We point to a MultiKeywordSelector. 396 MultiKeywordSelector *SI = getMultiKeywordSelector(); 397 return SI->getNumArgs(); 398} 399 400IdentifierInfo *Selector::getIdentifierInfoForSlot(unsigned argIndex) const { 401 if (getIdentifierInfoFlag() < MultiArg) { 402 assert(argIndex == 0 && "illegal keyword index"); 403 return getAsIdentifierInfo(); 404 } 405 // We point to a MultiKeywordSelector. 406 MultiKeywordSelector *SI = getMultiKeywordSelector(); 407 return SI->getIdentifierInfoForSlot(argIndex); 408} 409 410StringRef Selector::getNameForSlot(unsigned int argIndex) const { 411 IdentifierInfo *II = getIdentifierInfoForSlot(argIndex); 412 return II? II->getName() : StringRef(); 413} 414 415std::string MultiKeywordSelector::getName() const { 416 SmallString<256> Str; 417 llvm::raw_svector_ostream OS(Str); 418 for (keyword_iterator I = keyword_begin(), E = keyword_end(); I != E; ++I) { 419 if (*I) 420 OS << (*I)->getName(); 421 OS << ':'; 422 } 423 424 return OS.str(); 425} 426 427std::string Selector::getAsString() const { 428 if (InfoPtr == 0) 429 return "<null selector>"; 430 431 if (getIdentifierInfoFlag() < MultiArg) { 432 IdentifierInfo *II = getAsIdentifierInfo(); 433 434 // If the number of arguments is 0 then II is guaranteed to not be null. 435 if (getNumArgs() == 0) 436 return II->getName(); 437 438 if (!II) 439 return ":"; 440 441 return II->getName().str() + ":"; 442 } 443 444 // We have a multiple keyword selector. 445 return getMultiKeywordSelector()->getName(); 446} 447 448void Selector::print(llvm::raw_ostream &OS) const { 449 OS << getAsString(); 450} 451 452/// Interpreting the given string using the normal CamelCase 453/// conventions, determine whether the given string starts with the 454/// given "word", which is assumed to end in a lowercase letter. 455static bool startsWithWord(StringRef name, StringRef word) { 456 if (name.size() < word.size()) return false; 457 return ((name.size() == word.size() || !isLowercase(name[word.size()])) && 458 name.startswith(word)); 459} 460 461ObjCMethodFamily Selector::getMethodFamilyImpl(Selector sel) { 462 IdentifierInfo *first = sel.getIdentifierInfoForSlot(0); 463 if (!first) return OMF_None; 464 465 StringRef name = first->getName(); 466 if (sel.isUnarySelector()) { 467 if (name == "autorelease") return OMF_autorelease; 468 if (name == "dealloc") return OMF_dealloc; 469 if (name == "finalize") return OMF_finalize; 470 if (name == "release") return OMF_release; 471 if (name == "retain") return OMF_retain; 472 if (name == "retainCount") return OMF_retainCount; 473 if (name == "self") return OMF_self; 474 if (name == "initialize") return OMF_initialize; 475 } 476 477 if (name == "performSelector") return OMF_performSelector; 478 479 // The other method families may begin with a prefix of underscores. 480 while (!name.empty() && name.front() == '_') 481 name = name.substr(1); 482 483 if (name.empty()) return OMF_None; 484 switch (name.front()) { 485 case 'a': 486 if (startsWithWord(name, "alloc")) return OMF_alloc; 487 break; 488 case 'c': 489 if (startsWithWord(name, "copy")) return OMF_copy; 490 break; 491 case 'i': 492 if (startsWithWord(name, "init")) return OMF_init; 493 break; 494 case 'm': 495 if (startsWithWord(name, "mutableCopy")) return OMF_mutableCopy; 496 break; 497 case 'n': 498 if (startsWithWord(name, "new")) return OMF_new; 499 break; 500 default: 501 break; 502 } 503 504 return OMF_None; 505} 506 507ObjCInstanceTypeFamily Selector::getInstTypeMethodFamily(Selector sel) { 508 IdentifierInfo *first = sel.getIdentifierInfoForSlot(0); 509 if (!first) return OIT_None; 510 511 StringRef name = first->getName(); 512 513 if (name.empty()) return OIT_None; 514 switch (name.front()) { 515 case 'a': 516 if (startsWithWord(name, "array")) return OIT_Array; 517 break; 518 case 'd': 519 if (startsWithWord(name, "default")) return OIT_ReturnsSelf; 520 if (startsWithWord(name, "dictionary")) return OIT_Dictionary; 521 break; 522 case 's': 523 if (startsWithWord(name, "shared")) return OIT_ReturnsSelf; 524 if (startsWithWord(name, "standard")) return OIT_Singleton; 525 case 'i': 526 if (startsWithWord(name, "init")) return OIT_Init; 527 default: 528 break; 529 } 530 return OIT_None; 531} 532 533ObjCStringFormatFamily Selector::getStringFormatFamilyImpl(Selector sel) { 534 IdentifierInfo *first = sel.getIdentifierInfoForSlot(0); 535 if (!first) return SFF_None; 536 537 StringRef name = first->getName(); 538 539 switch (name.front()) { 540 case 'a': 541 if (name == "appendFormat") return SFF_NSString; 542 break; 543 544 case 'i': 545 if (name == "initWithFormat") return SFF_NSString; 546 break; 547 548 case 'l': 549 if (name == "localizedStringWithFormat") return SFF_NSString; 550 break; 551 552 case 's': 553 if (name == "stringByAppendingFormat" || 554 name == "stringWithFormat") return SFF_NSString; 555 break; 556 } 557 return SFF_None; 558} 559 560namespace { 561 struct SelectorTableImpl { 562 llvm::FoldingSet<MultiKeywordSelector> Table; 563 llvm::BumpPtrAllocator Allocator; 564 }; 565} // end anonymous namespace. 566 567static SelectorTableImpl &getSelectorTableImpl(void *P) { 568 return *static_cast<SelectorTableImpl*>(P); 569} 570 571SmallString<64> 572SelectorTable::constructSetterName(StringRef Name) { 573 SmallString<64> SetterName("set"); 574 SetterName += Name; 575 SetterName[3] = toUppercase(SetterName[3]); 576 return SetterName; 577} 578 579Selector 580SelectorTable::constructSetterSelector(IdentifierTable &Idents, 581 SelectorTable &SelTable, 582 const IdentifierInfo *Name) { 583 IdentifierInfo *SetterName = 584 &Idents.get(constructSetterName(Name->getName())); 585 return SelTable.getUnarySelector(SetterName); 586} 587 588size_t SelectorTable::getTotalMemory() const { 589 SelectorTableImpl &SelTabImpl = getSelectorTableImpl(Impl); 590 return SelTabImpl.Allocator.getTotalMemory(); 591} 592 593Selector SelectorTable::getSelector(unsigned nKeys, IdentifierInfo **IIV) { 594 if (nKeys < 2) 595 return Selector(IIV[0], nKeys); 596 597 SelectorTableImpl &SelTabImpl = getSelectorTableImpl(Impl); 598 599 // Unique selector, to guarantee there is one per name. 600 llvm::FoldingSetNodeID ID; 601 MultiKeywordSelector::Profile(ID, IIV, nKeys); 602 603 void *InsertPos = nullptr; 604 if (MultiKeywordSelector *SI = 605 SelTabImpl.Table.FindNodeOrInsertPos(ID, InsertPos)) 606 return Selector(SI); 607 608 // MultiKeywordSelector objects are not allocated with new because they have a 609 // variable size array (for parameter types) at the end of them. 610 unsigned Size = sizeof(MultiKeywordSelector) + nKeys*sizeof(IdentifierInfo *); 611 MultiKeywordSelector *SI = 612 (MultiKeywordSelector*)SelTabImpl.Allocator.Allocate(Size, 613 llvm::alignOf<MultiKeywordSelector>()); 614 new (SI) MultiKeywordSelector(nKeys, IIV); 615 SelTabImpl.Table.InsertNode(SI, InsertPos); 616 return Selector(SI); 617} 618 619SelectorTable::SelectorTable() { 620 Impl = new SelectorTableImpl(); 621} 622 623SelectorTable::~SelectorTable() { 624 delete &getSelectorTableImpl(Impl); 625} 626 627const char *clang::getOperatorSpelling(OverloadedOperatorKind Operator) { 628 switch (Operator) { 629 case OO_None: 630 case NUM_OVERLOADED_OPERATORS: 631 return nullptr; 632 633#define OVERLOADED_OPERATOR(Name,Spelling,Token,Unary,Binary,MemberOnly) \ 634 case OO_##Name: return Spelling; 635#include "clang/Basic/OperatorKinds.def" 636 } 637 638 llvm_unreachable("Invalid OverloadedOperatorKind!"); 639} 640